CIS (EI) vs Slovakia: Share of primary energy from nuclear
CIS (EI)
6.4%
in 2025
Slovakia
32.5%
in 2025
CIS (EI) rank
2nd
Slovakia rank
3rd
Share of primary energy from nuclear over time
- CIS (EI)
- Slovakia
How they compare
Slovakia currently reports 32.5% against 6.4% in CIS (EI), a difference of 26.1%.
That makes Slovakia's figure about 5.1 times CIS (EI)'s.
The two have swapped places 3 times across 61 shared years of data; in 1965 it was CIS (EI) ahead.
CIS (EI) ranks 2nd and Slovakia ranks 3rd of 3 groups.
Across the 7 decades both report, CIS (EI) averaged higher in 2 and Slovakia in 5.
Head to head by decade
| Decade | CIS (EI) | Slovakia | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.1% | 0.0% | 0.1% | CIS (EI) |
| 1970s | 0.7% | 0.6% | 0.2% | CIS (EI) |
| 1980s | 2.7% | 11.1% | 8.4% | Slovakia |
| 1990s | 3.5% | 17.1% | 13.6% | Slovakia |
| 2000s | 5.1% | 23.9% | 18.8% | Slovakia |
| 2010s | 5.8% | 24.4% | 18.6% | Slovakia |
| 2020s | 6.4% | 28.4% | 22.0% | Slovakia |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher share of primary energy from nuclear, CIS (EI) or Slovakia?
- Slovakia, at 32.5% against 6.4% in CIS (EI) as of 2025.
- What is the difference in share of primary energy from nuclear between CIS (EI) and Slovakia?
- 26.1%, with Slovakia ahead.
- How many years of comparable data are there for CIS (EI) and Slovakia?
- 61 years are reported by both, from 1965 to 2025.
- How do CIS (EI) and Slovakia rank globally for share of primary energy from nuclear?
- CIS (EI) ranks 2nd and Slovakia ranks 3rd of 3 groups.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017); U.S. Energy Information Administration (2026) – with major processing by Our World in Data, published as Share of primary energy from nuclear. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Measured as a percentage of total energy supply.